Date

toxicity monitor Articles

Various sources assumed the share of guilt in the fall of the Roman Empire due to the use of the lead pipe, Devonshire colic in the 18th century, poisoning from the addition of lead acetate to wine and pediatric lead poisoning. Not only production but also the use of pottery for centuries caused poisoning among the population. When a piece of pottery covered with lead glaze is not heated enough, ...

What is Whole Effluent Toxicity (WET) testing? Whole Effluent Toxicity (WET) testing is an important component of the U.S. Environmental Protection Agency’s (USEPA’s) integrated approach for detecting and addressing toxicity in surface waters. The National Pollutant Discharge Elimination System (NPDES) permit program, authorized by the Clean Water Act, controls water pollution by ...

The European legislation, and in particular the Water Framework Directive requires the development of cost efficient monitoring tools that can provide the required information for the assessment of water contamination. Passive sampling methods represent one of the novel tools that have a potential to be used in various regulatory monitoring programmes aimed at assessing the levels of chemical ...

Within the water industry, combating algae is known as a hazardous chemical process. However the chemical free approach and solution of LG Sound is confirmed to be environmental friendly by Sembcorp Bournemouth Water (SBW). As a result of the experienced problems in the lakes of SBW, the MPC Buoy was installed to improve the water ...

The test of significant toxicity (TST) is a hypothesis‐testing approach based on bioequivalence developed by the U.S. Environmental Protection Agency (U.S. EPA) for analyzing whole‐effluent toxicity (WET) and ambient toxicity data. The present study compares results of acute and chronic toxicity tests of effluent, storm‐water, and ambient (i.e., receiving‐water) samples using both the TST and ...

EMSL Analytical provides formaldehyde testing solutions for industry and the public. Formaldehyde can be found in most homes across the country. The chemical is commonly used to manufacture numerous building materials and household items. The most significant source of formaldehyde in most homes is from pressed wood products made with formaldehyde containing adhesives. According to the EPA, “High ...

The fourth meeting of the United Nations Environment Programme’s Conference of the Parties of the Stockholm Convention on Persistent Organic Pollutants opened today in Geneva, Switzerland to discuss restricting and phasing out the world’s most dangerous chemicals. Representatives from Indigenous communities of the Arctic greeted the delegates with drumming and traditional songs to remind them of ...

Point Sensors Ion Mobility Spectroscope (IMS) – a gas sample is ionized by a radioactive source (Ni63). Differences in ion drift under the influence of an applied electric field produce a spectrum that is dependent on the mass, charge, and shape of the component ions. The detector signal and strength is tuned to the drift time of the ion of interest (in this case HF) and signal strength is ...

ABSTRACT Of the 188 hazardous air pollutants, or 'air toxics,' identified by the U.S. Clean Air Act, 18 were targeted as the most important in a 10-city pilot study conducted in 2001 and 2002 as part of the National Air Toxics Trend Sites Program. This paper describes the pilot study. The U.S. Clean Air Act identifies 188 hazardous air pollutants (HAPs), or “air toxics,” associated with ...

Contamination and toxicity associated with urban stormwater runoff are a growing concern because of the potential for receiving system impacts. California water regulators are mandating implementation of green infrastructure as part of new urban development projects to treat stormwater and increase infiltration. Parking lot bioswales are low impact development practices that promote filtering ...

Modern Water pic (AIM:MWG), the owner of leading water technologies for the production of fresh water and monitoring of water quality, has collaborated with the Unwersity of Central Florida (UCF) to supply a Microtox® M500 toxicity monitor. The monitor will assist with research into acVanced treatment techniques which could provide a solution to the removal of Total Phosphorus from the Middle ...

Abstract Cell biosensors are currently emerging as novel, sensitive techniques to monitor the toxicity of environmental pollutants. Here, we have developed electric cell-substrate impedance sensing (ECIS) for on-line monitoring of the behavior of insect cells. Cells were cultured on a microarray of eight small gold electrodes, deposited on the bottom of tissue culture wells. Upon inoculation, ...

Pesticides are applied to state and local waterways in California to control insects such as mosquitoes, which are known to serve as a vector for West Nile Virus infection of humans. The California State Water Resources Control Board adopted a National Pollutant Discharge Elimination System General Permit to address the discharge of pesticides to waters of the United States resulting from ...

The EPA regional offices who continuously monitor ambient air quality have determined that combustion by-products and automobile exhaust make up the largest source of air pollution throughout the U.S., with more severe conditions existing overseas. Despite concerns about the conditions outdoors, air quality in the workplace and home environment receive even more attention. The EPA’s list of ...

Despite the significant ecological role in groundwater the value of fungi as indicators of groundwater pollution is not known, as fungi are notoriously challenging to assess for toxicity because of their varied morphological components, in particular their filamentous structures. Hence they remain rarely used in environmental risk assessments and monitoring programs for aquatic systems. We ...

Lemna minor, a free‐floating macrophyte, is used for bio‐monitoring of mine effluent quality under the Metal Mining Effluent Regulations (MMER) of the Environmental Effects Monitoring (EEM) program in Canada, and is known to be sensitive to trace metals commonly discharged in mine effluents such as nickel. Environment Canada's standard toxicity testing protocol recommends frond count (FC) and ...

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you

Subscribe to our eBulletins

Join our growing community of environmental professionals who are currently subscribed to weekly newsletters, product alerts, job alerts, and our monthly event updates and article newsletters. Stay up-to-date with the global environmental industry. Sign up for one or all of our free newsletters and alerts today.